Atmel Corporation

Andrea Bettini

Massimiliano Frulio

Lorenzo Bedarida

Stefano Sivero

Stefano Surico

Giorgio Oddone

Monica Marziani

Giorgio Bosisio

Gabriele Pelli

Apparatus, systems, and methods are disclosed that operate to trigger a reference voltage generator from a supply voltage detector, compare an output voltage level from the reference voltage generator with a supply voltage, and to generate an enable signal when the supply voltage is greater than the output voltage level. Additional apparatus, systems, and methods are disclosed.

Method and device for managing a power supply power-on sequence

A current mirror circuit includes a first current-mirror transistor coupled to a second current-mirror transistor. A load is coupled to the second current-mirror transistor. A first current source is coupled to the first current-mirror transistor to cause a bias current to flow through the first current-mirror transistor and a second current source is coupled to the second current-mirror transistor and in parallel with the load to shunt the bias current away from the load.

Biasing current to speed up current mirror settling time

A fast power-on band-gap reference circuit includes a buffer, a first band-gap logic, and a second high drive band-gap logic. During power-on of the band-gap reference circuit, both the first band-gap logic and the second high drive band-gap logic are activated, in which the first band-gap logic charges an output of the first band-gap logic and the second high drive band-gap logic charges a capacitance associated with an output of the band-gap reference circuit. When the output of the first band-gap logic reaches a predetermined value, the second high drive band-gap logic is deactivated and the output of the first band-gap logic is couple to the output of the band-gap reference circuit through the buffer.

Method and apparatus for fast power-on of the band-gap reference

Growing community of inventors

Cavenago Brianza, Italy

Andrea Bettini